Effect of Al target power density on tribological properties of (Ti, Al)N coatings

Effect of Al target power density on tribological properties of (Ti, Al)N coatings

Blog Article

(Ti, Al)N coatings with different Al target power densities on the surface of M2 high-speed steel were deposited by magnetron sputtering to study the tribological properties.The phase composition, microstructure, and element distribution of coatings were Mirrors characterized by x-ray diffraction, field emission scanning electron microscopy, x-ray photoelectron spectroscopy, and energy dispersive spectrometry.The results showed that the tribological properties of the coatings were closely related to the power density of the Al target.With a gradual increase in the Al target power density, the microhardness increased from 1324.7 to 2819.

2 HV.Meanwhile, when Al target power density was 7.9 W/cm2, the coatings exhibit the lowest coefficient of friction (COF = 0.23).By comparison, it was found that (Ti, Al)N coatings exhibited a smooth surface, uniformly dense columnar structures, and smaller grain sizes due to the addition of Al Pipes atoms.

(Ti, Al)N coatings showed a unique microstructure that determined their excellent tribological properties.